Pitman.



R. A. GALLY.

PITMAN. APPLICATION FILED JULY 30.1917.

Patented Apr. 2, 1918.-

ma n srrns liner omen,

ROBERTA. GALLY, 0F CINGINlIATLOHIO, ASSIGNQRTO i l CINCINNATI, OHIO.

rrrn natnwm COMPANY, or

PITMAN.

To all whom it may] concern p Be it known that'l, Ronnn'r items, a citizenof the United States, andresiding at Cincinnati, in the countyot Hamilton and State-01E Ohio; have invented certain new and useful Improvements in Pitmen, of

which the following is a specification.

In the present application there is set forth an improved detail of attaching flexi ble pitmen to the crank block and pumper blocks. a

In the drawings, FigureL'is a reduced size front view of an air pump such as is used for a player piano, the trout bearing and front end of the crank shaft removed to allowa clear view of the crank and crank block; and Fig. 2, is a full size view of the crank: block and one pamper block showing detail of the attachmentof the'flexihle pitmen. J y

Four'pumpers 1 are shown attached. to the four inner faces of a rectangular frame orboX 1 2 which has wind ways 3 leading fromall foufoiisaid pumpers to a common service,

port 4t adapted to be, connected toany suitable apparatus to beaifected by the air service to or from this motor or pump, the apparatus being usable as either a motor ,or

pu1i1p,'suitable valves being provided to each I theouter. valvesobeing shownj H y A crank'6 1s revoluhle about a central pumper of the present structure hereof, only shaft 7 and on tliiscrank 6 is mounted a single floating crank blockS to whichare attached four flexible pitmen 9 made of strong leather or other suitable" material,

each of which pitmen 9 is attached to its corresponding one of the pumpers ion a block 10 attached to said pump a nut .11 en] each bolt 12 holding ,a cap 13 clamped against each pitman 9 and holding each said pitman against its block 10. A sharp clip 14 of thin steel as saw blade or spring stock is set into the end of each block 10 so that the pitman placed therewith has this sharp clip 14 screwed into, it to prevent any chance of the pitman slipping'when under strain from the crank motion, and this clip 14 also allows a pitman to be slightly shortened at any time by reclamping it to another posi tion of grip for the clip 14.

The end of each pitman 9 where attached to the crank block 8 has a small hole drilled Widthwise through it near its end, and'parallel to its faces, and a pin 15 is driven into Specification of Letters Patent.

Application filed July 30, 1917.

, Patented Apr. 2, i919. Seri aiNo.183,576.

i this hole to swell the end of the pitman as better shown in Fig. 2.

The crank block 8 has four arms ol. cross arrangement, each such arm having a slot for receiving a. pitman 9, the inner end of each such slot having an enlargement or hole 16 into which the swelled end of the pitinan 9 is inserted and the remainder of that end of such pitman is held closely in the straight part of the slot.- A screw 17 may be run through to the hold of the block to the pitman, but such screw without aid of the swelled term of the end of each pitman 9 would be insufficient grip, but such swelled end alone is sufficient to hold the pitman as to end pull; its screw beingan added security, but principally'used to preserve the strength of the split arms or the crank block 8, and to pre vent any side splitting of the pitman.

Either o1 the foregoing attachment means of the pltmen 9 can be employed at the crank thereof, or at" the pumper end although it is more convenient to have the ad ustable style 10,. 11, 12, 13, 14;, at the pumper endof a pitman, and is specially desirable where a floating crank block as 8 is 9 used and is of such small size as to make ditficult thense or access to the adjustable attachment if it were at the crank end of the pitman. lt also apparent that those means of. attachment may be employed for pitmen that are inflexible, as well. as for thoset-hat are flexible, and that the pitmen may be used for any other purpose as well asfor pumpers.

What-Iclaim as'my invention is 1. A strap form pitman and an element attached to an end of saidpitman, said element having a slot therein, said slot being enlarged at its inner end, the said attached end of said pitman having an expansion at its extreme end, and the said exeach arm otthe crank block 8 and thus add part of the said slot of the said element, and a compression means extended through said element and its said slot and through the said end of the said pitman.

3. A strap form pitman and an element attached to an end of said pitman, said element having a slot therein, said slot being enlarged at its inner end, the said attached end of said pitman having an expansion at its extreme end, and the said expanded part of said pitman inserted in the said enlarged part of the said slot of the said element, and a compression means extended through said element and its said slot, said compression means being adjacent to the said enlarged part of said slot.

4. A strap form pitman and an element attached to an end of said pitman, said elelarged part of said slot.

5. A strap form pitman and an element attached to an end of said pitman, said element havinga slot therein, said slot being enlarged at its inner end, the said attached endof said pitmanhaving an expansion at its extreme end, and the said expanded part of said pitman inserted in the said enlarged part of: the said slot of the said element, and

a compression means extended through said element and its said slot, said compression means being outward from the said enlarged part of said slot.

6. A strap form pitman and an element attached to-an end of said pitman, said ele-' ment having a slot therein, said slot beingv enlarged at its inner end, the said attached end of said pitman having an expansion at its extreme end, and the said expanded part of said pitman inserted in theisaid enlargedpart of the said slot of the said element, and a compression means extended through said element and its said slot and through the said end of the said pitman, said compression means being outward from the said en a larged part of said slot.

7. A strap form pitman and an element attached to an end of said pitman,

ment having a slot therein, said slot being enlarged at its inner end, the said attachedend of said pitman having an expansion at its extreme end, and the said expanded part said eleof said pitman inserted in the said enlarged 7 part of the said slot of the said element, and a compression means extended through said element and its said slot, the main dimension of said compression means in direction transverse to'the main dimension of said en: a

larged part of said slot.

8. A strap form pitman and attached to an end of said pitman, said element having a slot therein, said slot being an element enlarged at its inner end, the said attached end of said pitman having an expansion, at-

its extreme end, and the said expanded part of said pitman inserted in the said enlarged part of the said slot of the said element, the said expanded part of said pitman comprising an inserted element forced into the body of said pitman at its said enlarged part,

9. A strap form pitman and an element attached to anend of said pitman, said element comprising two arts between which the said end of the sai pitman is held, and a compression means binding the two said parts and the said end of the said pitman together, and a sharp clip in a face of one of said parts of said element and extended part way through the body of the-said end of the said pitman. 1

Witnesses PAUL HENGGE, NOR A KEISER.

topics at this patent may be obtained forfive cents each, by addressing the commissioner of Patents,

. i Washington, D. 9.;

noe'r. A. e LLYQ 

